WebSockets provide a way to establish a persistent, full-duplex communication channel over a single TCP connection between the client (typically a web browser) and the server.

• non persistent in http - as every request takes a three way handshake , as a req response model
• websockets and webrtc are persistent
• full duplex means the browser and server can request and repond at the same time,
• RTC real time communication,

Use Cases for WebSockets:

• Real-Time Applications: Chat applications, live sports updates, real-time gaming, and any application requiring instant updates can benefit from WebSockets.
• Live Feeds: Financial tickers, news feeds, and social media updates are examples where WebSockets can be used to push live data to users.
• Interactive Services: Collaborative editing tools, live customer support chat, and interactive webinars can use WebSockets to enhance user interactio

Good example - https://www.binance.com/en/trade/SOL_USDT?type=spot

Why we use websockets in chat apps or chat rooms